For professionals in chemical research, development, and procurement, a thorough understanding of a compound's properties is fundamental. 4-Chloro-2-nitrobenzonitrile (CAS 34662-32-3) is a vital intermediate with specific characteristics that dictate its utility. This article provides a deep dive into its key chemical and physical properties, offering valuable data for those looking to buy or work with this compound.

Chemically, 4-Chloro-2-nitrobenzonitrile is an aromatic compound with the molecular formula C7H3ClN2O2. Its molecular weight is approximately 182.56 g/mol. The presence of a nitrile group (-CN), a nitro group (-NO2), and a chlorine atom (-Cl) attached to a benzene ring gives it distinct reactivity, making it a versatile building block for synthesis. Its IUPAC name is 4-chloro-2-nitrobenzonitrile, and common synonyms include 2-Nitro-4-chlorobenzonitrile and 5-Chloro-2-cyanonitrobenzene.

Physically, it typically appears as a yellow to brown colored powder. Its melting point is reported to be in the range of 96-101°C, a critical parameter for handling and formulation. The predicted boiling point is around 313.5±27.0 °C, and its density is approximately 1.47±0.1 g/cm³. These properties are essential for R&D scientists to consider when designing reaction conditions or for procurement managers to verify product quality upon receipt.

The compound's hazard classification often includes warnings for irritation (H315, H319, H335), indicating it can be harmful if inhaled, absorbed through the skin, or comes into contact with eyes. Therefore, appropriate safety measures and personal protective equipment (PPE) are necessary when handling. When you buy this chemical, always review the provided MSDS for comprehensive safety guidelines.

The primary utility of 4-Chloro-2-nitrobenzonitrile lies in its role as an intermediate for industrial organic chemicals, most notably in the production of azo dyes. Its transformation into 2-amino-4-chlorobenzonitrile is a key step in dye synthesis. For manufacturers and researchers, understanding these properties ensures efficient and safe utilization of this valuable intermediate. If you are looking to buy this compound, consulting detailed product specifications and obtaining samples from reputable suppliers is recommended to confirm its suitability for your specific applications.